100+ Free CMAS Science Grade 5 Practice Questions

Prepare for the Colorado Measures of Academic Success (CMAS) Science — Grade 5 exam with instant access — no signup required.

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Key Facts: CMAS Science Grade 5 Exam

Grade 5

CMAS Science tested grade (CDE)

ed.cde.state.co.us/assessment/cmas

Free

No student exam fee for standard school administration

CDE Assessment FAQs

Pearson

CDE assessment contractor; TestNav / PearsonAccessnext delivery

Spring 2026 CMAS Overview

Spring

Primary administration window (2026: April 6–24 for CMAS)

CDE Fact Sheets and FAQs

CAS

Aligned to Colorado Academic Standards grade-level expectations

CDE CMAS overview

650–850

Overall scale score range reported on CMAS score reports

CDE interpretive guides

5/8/11

Science tested grades statewide

CDE CMAS overview

SEP

Science and Engineering Practices integrated across large share of points

CMAS Science frameworks

CMAS Science Grade 5 is Colorado's free statewide spring summative (CDE/Pearson), mixed item types on TestNav, performance levels on a 650–850 scale; practice here is English MCQ study only.

Sample CMAS Science Grade 5 Practice Questions

Try these sample questions to test your CMAS Science Grade 5 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A solid crayon melts into a soft puddle under a warm lamp and later hardens again in a cool room. Which statement best describes the crayon particles during melting?

A.The particles disappear and only reappear when the crayon hardens

B.The particles stay the same kind of matter but move more freely as a liquid

C.The particles turn into air and float away permanently

D.The particles become living cells that grow

Explanation: Melting is a physical change of state. The crayon is still made of the same type of matter, but its particles gain energy and move more freely as a liquid. When cooled, they move less freely and form a solid again.

2Which property can help identify an unknown solid sample without turning it into a different substance?

A.Whether it burns completely in a flame

B.Whether acid makes it bubble and form a new gas

C.Its color, hardness, and whether a magnet attracts it

D.What color powder forms after mixing it with another chemical

Explanation: Color, hardness, and magnetism are physical properties that can be observed without changing the material into a new substance. Burning or chemical reactions change the sample.

3Students stir salt into warm water until the salt can no longer be seen. What most likely happened to the salt?

A.It dissolved and mixed with the water as tiny particles

B.It permanently vanished, so mass decreased

C.It turned into pure oxygen gas

D.It changed into living yeast cells

Explanation: Dissolving spreads salt particles throughout the water so crystals are no longer visible, but the salt is still present. Total mass is conserved if nothing leaves the cup.

4Which observation is the strongest evidence that a chemical change occurred?

A.Two clear liquids mix and form a cloudy yellow solid that cannot be filtered back into the original liquids

B.Ice cubes melt into liquid water in a warm room

C.A student pours water from a tall glass into a short bowl

D.Sand stirred into water later settles to the bottom

Explanation: A new solid with different properties that cannot be recovered by simple separation is strong evidence of a chemical change. Melting, pouring, and settling sand are physical changes or mixtures.

5Matter is made of particles that are too small to see. Which everyday observation best supports that idea?

A.A spoonful of sugar dissolves in tea and seems to disappear, yet the tea tastes sweet

B.A rock sits still on a desk for several days

C.A metal ruler is longer than a plastic ruler

D.A classroom clock ticks once each second

Explanation: Sugar crystals become invisible in tea but still affect taste, which supports the idea that matter is made of tiny particles still present after dissolving.

6A sealed plastic bottle holds ice cubes. After the ice melts into water, the bottle still feels the same weight on a scale. What does this result best support?

A.Mass is conserved when matter changes state in a closed system

B.Melting creates extra mass from heat alone

C.Ice has no mass until it becomes liquid

D.Water always weighs less than ice in any container

Explanation: In a closed system, mass stays the same when ice melts. The particles rearrange from solid to liquid, but total mass is conserved.

7Which mixture can usually be separated by filtering with a paper filter and funnel?

A.Sand mixed with water

B.Sugar completely dissolved in water

C.Salt completely dissolved in water

D.Food coloring mixed evenly through water

Explanation: Sand particles are large enough to be trapped by filter paper while water passes through. Fully dissolved substances and food coloring pass through filters with the water.

8Students compare two white powders that look alike. Which plan best uses properties to tell them apart without a chemical reaction?

A.Measure each sample's mass for the same volume and test if a magnet attracts either powder

B.Burn both powders until nothing remains

C.Mix both powders with acid and ignore safety

D.Assume they are identical because both look white

Explanation: Density-related mass for equal volume and magnetic response are physical properties useful for identifying materials without changing them into new substances.

9When vinegar and baking soda are mixed in an open cup, bubbles form and the cup feels cooler. What best explains the bubbling?

A.A new gas is produced during a chemical change

B.The cup is leaking liquid through its bottom

C.The solids are only rearranging into larger crystals

D.Air from the room is permanently trapped under the liquid

Explanation: Bubbles of gas forming when two materials react is common evidence of a chemical change that produces a new substance (a gas).

10A closed bag contains 20 g of powder A and 30 g of liquid B before they react. After they react completely, a new solid and a gas are inside the sealed bag. What should the total mass be if no material escaped?

A.50 g

B.30 g

C.20 g

D.0 g

Explanation: Conservation of mass means the total mass of products equals the total mass of reactants in a closed system: 20 g + 30 g = 50 g.

About the CMAS Science Grade 5 Exam

Colorado Measures of Academic Success (CMAS) Science — Grade 5 is Colorado's grade-level Colorado Measures of Academic Success (CMAS) statewide summative assessment, developed by CDE with Colorado educators and Pearson against the Colorado Academic Standards. It is administered in the spring window (for 2026: April 6–24 per CDE FAQs) on Pearson TestNav. Official forms use mixed item types (selected-response, technology-enhanced, and for many content areas constructed-response tasks). OpenExamPrep free practice is an English-language four-option MCQ study adaptation aligned to CMAS reporting categories and grade-level CAS—not official secure items, not a full TE/CR simulation, and not a substitute for classroom instruction or the official assessment.

Assessment

Question count not published by the exam provider

Time Limit

About 3 hours 15 minutes total across three units (CDE 2025–26 time table lists Grade 5 Science as 3h 15m; Spring 2026 Procedures Manual lists three units for Grades 5 and 8 science).

Passing Score

CMAS Science and Social Studies overall scale scores range from 650 to 850 and are reported in four performance levels: Partially Met Expectations, Approached Expectations, Met Expectations, and Exceeded Expectations. Met Expectations and Exceeded Expectations indicate grade-level expectations have been met or exceeded (CDE CMAS interpretive guides; social studies cut scores adopted for 2026 reporting after the 2025 CAS-aligned first administration).

Exam Fee

Free for Colorado public school students; CMAS is a state-required summative assessment administered by districts at no cost to families (CDE Assessment FAQs). (Colorado Department of Education (CDE) with assessment contractor Pearson; delivery via PearsonAccessnext / TestNav)

CMAS Science Grade 5 Exam Content Outline

35% of score points

Physical Science

Grade 5 CAS physical science: matter as particles too small to see, identifying materials by properties, conservation of weight in heating/cooling/mixing, whether mixing forms new substances, and gravitational force directed toward Earth's center.

24% of score points

Physical/Life Science

A combined reporting category in the CDE framework: energy in animals' food traced back to the Sun (5.1.4), matter cycling among plants, animals, decomposers and the environment, and plants getting growth materials chiefly from air and water.

41% of score points

Earth and Space Science

Grade 5 CAS earth and space science: apparent brightness and distance of stars, patterns from Earth's rotation and orbit, interactions of the geosphere/biosphere/hydrosphere/atmosphere, the distribution of Earth's water, and community actions that protect Earth's resources.

65–75% of score points involve SEPs (integrated, not a separate reporting category)

Science and Engineering Practices

Every item integrates at least two CAS dimensions around a grounding phenomenon, so practices are embedded within the content categories.

How to Pass the CMAS Science Grade 5 Exam

What You Need to Know

Passing score: CMAS Science and Social Studies overall scale scores range from 650 to 850 and are reported in four performance levels: Partially Met Expectations, Approached Expectations, Met Expectations, and Exceeded Expectations. Met Expectations and Exceeded Expectations indicate grade-level expectations have been met or exceeded (CDE CMAS interpretive guides; social studies cut scores adopted for 2026 reporting after the 2025 CAS-aligned first administration).
Assessment: Question count not published by the exam provider
Time limit: About 3 hours 15 minutes total across three units (CDE 2025–26 time table lists Grade 5 Science as 3h 15m; Spring 2026 Procedures Manual lists three units for Grades 5 and 8 science).
Exam fee: Free for Colorado public school students; CMAS is a state-required summative assessment administered by districts at no cost to families (CDE Assessment FAQs).

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

CMAS Science Grade 5 Study Tips from Top Performers

1Use CDE-sanctioned Colorado Practice Resources (coassessments.com) so students learn TestNav tools and item interactions.

2Align review to grade-level Colorado Academic Standards and CMAS frameworks/evidence statements, not only generic worksheets.

3Review wrong answers by reporting category (for example reading subclaim or math major content) to target instruction.

4Use short, frequent practice sessions across the year rather than cramming only in the April window.

5For constructed-response skills, practice evidence selection, planning, and revision even when using MCQ study items.

Frequently Asked Questions

What is the CMAS Science Grade 5 assessment?

Colorado Measures of Academic Success (CMAS) is Colorado's standards-based statewide summative program. The Grade 5 Science form measures mastery of grade-level Colorado Academic Standards and is developed by CDE with Colorado educators and Pearson.

Is CMAS free for students?

Yes. CMAS is administered through Colorado public schools as a state assessment. Families do not pay an exam fee for standard school-based administration (CDE Assessment FAQs).

How long is the official test?

About 3 hours 15 minutes total across three units (CDE 2025–26 time table lists Grade 5 Science as 3h 15m; Spring 2026 Procedures Manual lists three units for Grades 5 and 8 science).

What item types appear on the official CMAS?

Official CMAS uses selected-response, technology-enhanced, and often constructed-response or performance/simulation tasks depending on content area. This site offers English four-option MCQ study adaptations only—not an official-format simulation.

How are results reported?

Are these practice questions official CMAS items?

No. These free practice questions are original study aids aligned to Colorado Academic Standards and CMAS frameworks/blueprints. They are not secure official items and do not replace Colorado Practice Resources, classroom instruction, or the official spring assessment.

Who takes CMAS Science?

Students in grades 5, 8, and 11 take grade-level CMAS Science (or CoAlt Science when eligible) at all schools (CDE CMAS overview).

100+ Free CMAS Science Grade 5 Practice Questions

CMAS Science Grade 5

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